Mercurial > octave-antonio
annotate src/error.cc @ 9753:892e2aa7bc75
improve error messages by auto-prepending current function name
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Thu, 22 Oct 2009 08:56:58 +0200 |
| parents | ef45d191d833 |
| children | 2cd940306a06 |
| rev | line source |
|---|---|
| 1 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 8920 | 4 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 John W. Eaton |
| 1 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 1 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 1 | 21 |
| 22 */ | |
| 23 | |
| 240 | 24 #ifdef HAVE_CONFIG_H |
| 1192 | 25 #include <config.h> |
| 1 | 26 #endif |
| 27 | |
| 1343 | 28 #include <cstdarg> |
| 1633 | 29 #include <cstring> |
| 1343 | 30 |
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31 #include <iostream> |
| 5765 | 32 #include <sstream> |
| 1728 | 33 #include <string> |
| 34 | |
| 1352 | 35 #include "defun.h" |
| 1 | 36 #include "error.h" |
| 3707 | 37 #include "input.h" |
| 1742 | 38 #include "pager.h" |
| 1352 | 39 #include "oct-obj.h" |
| 5567 | 40 #include "oct-map.h" |
| 1352 | 41 #include "utils.h" |
| 2370 | 42 #include "ov.h" |
| 3707 | 43 #include "ov-usr-fcn.h" |
| 44 #include "pt-pr-code.h" | |
| 45 #include "pt-stmt.h" | |
| 46 #include "toplev.h" | |
| 47 #include "unwind-prot.h" | |
| 2370 | 48 #include "variables.h" |
| 1 | 49 |
| 2174 | 50 // TRUE means that Octave will try to beep obnoxiously before printing |
| 51 // error messages. | |
| 5794 | 52 static bool Vbeep_on_error = false; |
| 2174 | 53 |
| 3707 | 54 // TRUE means that Octave will try to enter the debugger when an error |
| 55 // is encountered. This will also inhibit printing of the normal | |
| 56 // traceback message (you will only see the top-level error message). | |
| 7353 | 57 bool Vdebug_on_error = false; |
| 3707 | 58 |
| 59 // TRUE means that Octave will try to enter the debugger when a warning | |
| 60 // is encountered. | |
| 7353 | 61 bool Vdebug_on_warning = false; |
| 3707 | 62 |
| 5567 | 63 // TRUE means that Octave will try to display a stack trace when a |
| 64 // warning is encountered. | |
| 65 static bool Vbacktrace_on_warning = false; | |
| 66 | |
| 67 // TRUE means that Octave will print a verbose warning. Currently unused. | |
| 68 static bool Vverbose_warning; | |
| 69 | |
| 5582 | 70 // TRUE means that Octave will print no warnings, but lastwarn will be |
| 71 //updated | |
| 72 static bool Vquiet_warning = false; | |
| 73 | |
| 5567 | 74 // A structure containing (most of) the current state of warnings. |
| 75 static Octave_map warning_options; | |
| 76 | |
| 3935 | 77 // The text of the last error message. |
| 78 static std::string Vlast_error_message; | |
| 79 | |
| 3934 | 80 // The text of the last warning message. |
| 81 static std::string Vlast_warning_message; | |
| 82 | |
| 5567 | 83 // The last warning message id. |
| 84 static std::string Vlast_warning_id; | |
| 3934 | 85 |
| 5567 | 86 // The last error message id. |
| 87 static std::string Vlast_error_id; | |
| 3934 | 88 |
| 6361 | 89 // The last file in which an error occured |
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90 static Octave_map Vlast_error_stack; |
| 6361 | 91 |
| 143 | 92 // Current error state. |
| 3935 | 93 // |
| 94 // Valid values: | |
| 95 // | |
| 96 // -2: an error has occurred, but don't print any messages. | |
| 97 // -1: an error has occurred, we are printing a traceback | |
| 98 // 0: no error | |
| 99 // 1: an error has occurred | |
| 100 // | |
| 672 | 101 int error_state = 0; |
| 102 | |
| 3489 | 103 // Current warning state. |
| 3935 | 104 // |
| 105 // Valid values: | |
| 106 // | |
| 107 // 0: no warning | |
| 108 // 1: a warning has occurred | |
| 109 // | |
| 3489 | 110 int warning_state = 0; |
| 111 | |
| 1489 | 112 // Tell the error handler whether to print messages, or just store |
| 113 // them for later. Used for handling errors in eval() and | |
| 114 // the `unwind_protect' statement. | |
| 4699 | 115 int buffer_error_messages = 0; |
| 1489 | 116 |
| 3815 | 117 // TRUE means error messages are turned off. |
| 118 bool discard_error_messages = false; | |
| 119 | |
| 4452 | 120 // TRUE means warning messages are turned off. |
| 121 bool discard_warning_messages = false; | |
| 122 | |
| 3811 | 123 // The message buffer. |
| 5765 | 124 static std::ostringstream *error_message_buffer = 0; |
| 143 | 125 |
| 4318 | 126 void |
| 127 reset_error_handler (void) | |
| 128 { | |
| 129 error_state = 0; | |
| 130 warning_state = 0; | |
| 4699 | 131 buffer_error_messages = 0; |
| 4318 | 132 discard_error_messages = false; |
| 133 } | |
| 134 | |
| 5567 | 135 static void |
| 5794 | 136 initialize_warning_options (const std::string& state) |
| 5567 | 137 { |
| 138 warning_options.clear (); | |
| 139 | |
| 140 warning_options.assign ("identifier", "all"); | |
| 141 warning_options.assign ("state", state); | |
| 142 } | |
| 143 | |
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144 static Octave_map |
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145 initialize_last_error_stack (void) |
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146 { |
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147 static bool initialized = false; |
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148 |
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149 static string_vector sv (4); |
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150 |
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151 if (! initialized) |
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152 { |
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153 sv[0] = "file"; |
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154 sv[1] = "name"; |
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155 sv[2] = "line"; |
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156 sv[3] = "column"; |
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157 |
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158 initialized = true; |
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159 } |
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160 |
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161 return Octave_map (dim_vector (0, 1), sv); |
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162 } |
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163 |
| 3491 | 164 // Warning messages are never buffered. |
| 165 | |
| 166 static void | |
| 5567 | 167 vwarning (const char *name, const char *id, const char *fmt, va_list args) |
| 3491 | 168 { |
| 4452 | 169 if (discard_warning_messages) |
| 170 return; | |
| 171 | |
| 3491 | 172 flush_octave_stdout (); |
| 173 | |
| 5765 | 174 std::ostringstream output_buf; |
| 3491 | 175 |
| 176 if (name) | |
| 3761 | 177 output_buf << name << ": "; |
| 178 | |
| 179 octave_vformat (output_buf, fmt, args); | |
| 180 | |
| 5765 | 181 output_buf << std::endl; |
| 3491 | 182 |
| 5775 | 183 // FIXME -- we really want to capture the message before it |
| 3935 | 184 // has all the formatting goop attached to it. We probably also |
| 185 // want just the message, not the traceback information. | |
| 186 | |
| 5765 | 187 std::string msg_string = output_buf.str (); |
| 3934 | 188 |
| 3935 | 189 if (! warning_state) |
| 190 { | |
| 191 // This is the first warning in a possible series. | |
| 5567 | 192 |
| 193 Vlast_warning_id = id; | |
| 3935 | 194 Vlast_warning_message = msg_string; |
| 195 } | |
| 3934 | 196 |
| 5582 | 197 if (! Vquiet_warning) |
| 198 { | |
| 199 octave_diary << msg_string; | |
| 3935 | 200 |
| 5582 | 201 std::cerr << msg_string; |
| 202 } | |
| 3491 | 203 } |
| 204 | |
| 1 | 205 static void |
| 4732 | 206 verror (bool save_last_error, std::ostream& os, |
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207 const char *name, const char *id, const char *fmt, va_list args, |
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208 bool with_cfn = false) |
| 1 | 209 { |
| 3815 | 210 if (discard_error_messages) |
| 211 return; | |
| 212 | |
| 3585 | 213 if (! buffer_error_messages) |
| 214 flush_octave_stdout (); | |
| 914 | 215 |
| 5775 | 216 // FIXME -- we really want to capture the message before it |
| 3935 | 217 // has all the formatting goop attached to it. We probably also |
| 218 // want just the message, not the traceback information. | |
| 219 | |
| 7877 | 220 std::ostringstream output_buf; |
| 221 | |
| 222 octave_vformat (output_buf, fmt, args); | |
| 223 | |
| 224 std::string base_msg = output_buf.str (); | |
| 225 | |
| 226 bool to_beep_or_not_to_beep_p = Vbeep_on_error && ! error_state; | |
| 227 | |
| 228 std::string msg_string; | |
| 229 | |
| 230 if (to_beep_or_not_to_beep_p) | |
| 231 msg_string = "\a"; | |
| 232 | |
| 233 if (name) | |
| 234 msg_string += std::string (name) + ": "; | |
| 235 | |
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236 // If with_fcn is specified, we'll attempt to prefix the message with the name |
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237 // of the current executing function. But we'll do so only if: |
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238 // 1. the name is not empty (anonymous function) |
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239 // 2. it is not already there (including the following colon) |
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240 if (with_cfn) |
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241 { |
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242 octave_function *curfcn = octave_call_stack::current (); |
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243 if (curfcn) |
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244 { |
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245 std::string cfn = curfcn->name (); |
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246 if (! cfn.empty ()) |
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247 { |
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248 cfn += ':'; |
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249 if (cfn.length () > base_msg.length () |
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250 || base_msg.compare (0, cfn.length (), cfn) != 0) |
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251 { |
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252 msg_string += cfn + ' '; |
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253 } |
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254 } |
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255 } |
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256 } |
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257 |
| 7880 | 258 msg_string += base_msg + "\n"; |
| 3935 | 259 |
| 4731 | 260 if (! error_state && save_last_error) |
| 3935 | 261 { |
| 262 // This is the first error in a possible series. | |
| 5567 | 263 |
| 264 Vlast_error_id = id; | |
| 7877 | 265 Vlast_error_message = base_msg; |
| 6361 | 266 |
| 7877 | 267 octave_user_code *fcn = octave_call_stack::caller_user_code (); |
| 6361 | 268 |
| 7877 | 269 if (fcn) |
| 270 { | |
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271 octave_idx_type curr_frame = -1; |
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272 |
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273 Vlast_error_stack = octave_call_stack::backtrace (0, curr_frame); |
| 6361 | 274 } |
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275 else |
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276 Vlast_error_stack = initialize_last_error_stack (); |
| 3935 | 277 } |
| 278 | |
| 1489 | 279 if (buffer_error_messages) |
| 280 { | |
| 7882 | 281 if (error_message_buffer) |
| 282 msg_string = "error: " + msg_string; | |
| 283 else | |
| 7880 | 284 error_message_buffer = new std::ostringstream (); |
| 1489 | 285 |
| 7880 | 286 *error_message_buffer << msg_string; |
| 1489 | 287 } |
| 288 else | |
| 289 { | |
| 3935 | 290 octave_diary << msg_string; |
| 4732 | 291 os << msg_string; |
| 1489 | 292 } |
| 1 | 293 } |
| 294 | |
| 1266 | 295 // Note that we don't actually print any message if the error string |
| 296 // is just "" or "\n". This allows error ("") and error ("\n") to | |
| 297 // just set the error state. | |
| 298 | |
| 1005 | 299 static void |
| 5567 | 300 error_1 (std::ostream& os, const char *name, const char *id, |
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301 const char *fmt, va_list args, bool with_cfn = false) |
| 1005 | 302 { |
| 303 if (error_state != -2) | |
| 304 { | |
| 1489 | 305 if (fmt) |
| 1005 | 306 { |
| 1489 | 307 if (*fmt) |
| 1005 | 308 { |
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309 size_t len = strlen (fmt); |
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310 |
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311 if (len > 0) |
| 1266 | 312 { |
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313 if (fmt[len - 1] == '\n') |
| 1266 | 314 { |
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315 if (len > 1) |
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316 { |
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317 char *tmp_fmt = strsave (fmt); |
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318 tmp_fmt[len - 1] = '\0'; |
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319 verror (true, os, name, id, tmp_fmt, args, with_cfn); |
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320 delete [] tmp_fmt; |
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321 } |
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322 |
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323 error_state = -2; |
| 1489 | 324 } |
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325 else |
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326 { |
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327 verror (true, os, name, id, fmt, args, with_cfn); |
| 1423 | 328 |
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329 if (! error_state) |
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330 error_state = 1; |
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331 } |
| 1266 | 332 } |
| 1005 | 333 } |
| 334 } | |
| 1489 | 335 else |
| 336 panic ("error_1: invalid format"); | |
| 1005 | 337 } |
| 338 } | |
| 339 | |
| 1 | 340 void |
| 6338 | 341 vmessage (const char *name, const char *fmt, va_list args) |
| 342 { | |
| 343 verror (false, std::cerr, name, "", fmt, args); | |
| 344 } | |
| 345 | |
| 346 void | |
| 1 | 347 message (const char *name, const char *fmt, ...) |
| 348 { | |
| 349 va_list args; | |
| 350 va_start (args, fmt); | |
| 6338 | 351 vmessage (name, fmt, args); |
| 1 | 352 va_end (args); |
| 353 } | |
| 354 | |
| 355 void | |
| 6338 | 356 vmessage_with_id (const char *name, const char *id, const char *fmt, |
| 357 va_list args) | |
| 358 { | |
| 359 verror (false, std::cerr, name, id, fmt, args); | |
| 360 } | |
| 361 | |
| 362 void | |
| 5567 | 363 message_with_id (const char *name, const char *id, const char *fmt, ...) |
| 364 { | |
| 365 va_list args; | |
| 366 va_start (args, fmt); | |
| 6338 | 367 vmessage_with_id (name, id, fmt, args); |
| 5567 | 368 va_end (args); |
| 369 } | |
| 370 | |
| 371 void | |
| 372 usage_1 (const char *id, const char *fmt, va_list args) | |
| 373 { | |
| 374 verror (true, std::cerr, "usage", id, fmt, args); | |
| 375 error_state = -1; | |
| 376 } | |
| 377 | |
| 378 void | |
| 6338 | 379 vusage (const char *fmt, va_list args) |
| 380 { | |
| 381 usage_1 ("", fmt, args); | |
| 382 } | |
| 383 | |
| 384 void | |
| 1 | 385 usage (const char *fmt, ...) |
| 386 { | |
| 387 va_list args; | |
| 388 va_start (args, fmt); | |
| 6338 | 389 vusage (fmt, args); |
| 5567 | 390 va_end (args); |
| 391 } | |
| 392 | |
| 393 void | |
| 6338 | 394 vusage_with_id (const char *id, const char *fmt, va_list args) |
| 395 { | |
| 396 usage_1 (id, fmt, args); | |
| 397 } | |
| 398 | |
| 399 void | |
| 5567 | 400 usage_with_id (const char *id, const char *fmt, ...) |
| 401 { | |
| 402 va_list args; | |
| 403 va_start (args, fmt); | |
| 6338 | 404 vusage_with_id (id, fmt, args); |
| 1 | 405 va_end (args); |
| 406 } | |
| 407 | |
| 3707 | 408 static void |
| 3719 | 409 pr_where_2 (const char *fmt, va_list args) |
| 410 { | |
| 411 if (fmt) | |
| 412 { | |
| 413 if (*fmt) | |
| 414 { | |
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415 size_t len = strlen (fmt); |
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416 |
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417 if (len > 0) |
| 3719 | 418 { |
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419 if (fmt[len - 1] == '\n') |
| 3719 | 420 { |
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421 if (len > 1) |
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422 { |
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423 char *tmp_fmt = strsave (fmt); |
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424 tmp_fmt[len - 1] = '\0'; |
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425 verror (false, std::cerr, 0, "", tmp_fmt, args); |
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426 delete [] tmp_fmt; |
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427 } |
| 3719 | 428 } |
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429 else |
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430 verror (false, std::cerr, 0, "", fmt, args); |
| 3719 | 431 } |
| 432 } | |
| 433 } | |
| 434 else | |
| 435 panic ("pr_where_2: invalid format"); | |
| 436 } | |
| 437 | |
| 438 static void | |
| 3707 | 439 pr_where_1 (const char *fmt, ...) |
| 440 { | |
| 441 va_list args; | |
| 442 va_start (args, fmt); | |
| 3719 | 443 pr_where_2 (fmt, args); |
| 3707 | 444 va_end (args); |
| 445 } | |
| 446 | |
| 447 static void | |
| 8973 | 448 pr_where (const char *who) |
| 3707 | 449 { |
| 8973 | 450 octave_idx_type curr_frame = -1; |
| 3707 | 451 |
| 8973 | 452 Octave_map stk = octave_call_stack::backtrace (0, curr_frame); |
| 4976 | 453 |
| 8973 | 454 octave_idx_type nframes_to_display = stk.numel (); |
| 4976 | 455 |
| 8973 | 456 if (nframes_to_display > 0) |
| 457 { | |
| 458 pr_where_1 ("%s: called from\n", who); | |
| 3708 | 459 |
| 8973 | 460 Cell names = stk.contents ("name"); |
| 461 Cell lines = stk.contents ("line"); | |
| 462 Cell columns = stk.contents ("column"); | |
| 3707 | 463 |
| 8973 | 464 for (octave_idx_type i = 0; i < nframes_to_display; i++) |
| 4976 | 465 { |
| 8973 | 466 octave_value name = names(i); |
| 467 octave_value line = lines(i); | |
| 468 octave_value column = columns(i); | |
| 3707 | 469 |
| 8973 | 470 std::string nm = name.string_value (); |
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471 |
| 8973 | 472 pr_where_1 (" %s at line %d column %d\n", nm.c_str (), |
| 473 line.int_value (), column.int_value ()); | |
| 4719 | 474 } |
| 3707 | 475 } |
| 476 } | |
| 477 | |
| 6000 | 478 static void |
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479 error_2 (const char *id, const char *fmt, va_list args, bool with_cfn = false) |
| 6000 | 480 { |
| 481 int init_state = error_state; | |
| 482 | |
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483 error_1 (std::cerr, "error", id, fmt, args, with_cfn); |
| 6000 | 484 |
| 485 if ((interactive || forced_interactive) | |
| 486 && Vdebug_on_error && init_state == 0 | |
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487 && octave_call_stack::caller_user_code ()) |
| 6000 | 488 { |
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489 unwind_protect::protect_var (Vdebug_on_error); |
| 6000 | 490 Vdebug_on_error = false; |
| 491 | |
| 8973 | 492 error_state = 0; |
| 6000 | 493 |
| 8973 | 494 pr_where ("error"); |
| 6000 | 495 |
| 496 do_keyboard (octave_value_list ()); | |
| 497 | |
| 498 unwind_protect::run (); | |
| 499 } | |
| 500 } | |
| 501 | |
| 502 void | |
| 6338 | 503 verror (const char *fmt, va_list args) |
| 504 { | |
| 505 error_2 ("", fmt, args); | |
| 506 } | |
| 507 | |
| 508 void | |
| 6000 | 509 error (const char *fmt, ...) |
| 510 { | |
| 511 va_list args; | |
| 512 va_start (args, fmt); | |
| 6338 | 513 verror (fmt, args); |
| 6000 | 514 va_end (args); |
| 515 } | |
| 516 | |
| 517 void | |
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518 verror_with_cfn (const char *fmt, va_list args) |
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519 { |
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520 error_2 ("", fmt, args, true); |
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521 } |
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522 |
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523 void |
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524 error_with_cfn (const char *fmt, ...) |
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525 { |
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526 va_list args; |
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527 va_start (args, fmt); |
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528 verror_with_cfn (fmt, args); |
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529 va_end (args); |
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530 } |
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531 |
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532 void |
| 6338 | 533 verror_with_id (const char *id, const char *fmt, va_list args) |
| 534 { | |
| 535 error_2 (id, fmt, args); | |
| 536 } | |
| 537 | |
| 538 void | |
| 6000 | 539 error_with_id (const char *id, const char *fmt, ...) |
| 540 { | |
| 541 va_list args; | |
| 542 va_start (args, fmt); | |
| 6338 | 543 verror_with_id (id, fmt, args); |
| 6000 | 544 va_end (args); |
| 545 } | |
| 546 | |
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547 void |
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548 verror_with_id_cfn (const char *id, const char *fmt, va_list args) |
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549 { |
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550 error_2 (id, fmt, args, true); |
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551 } |
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552 |
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553 void |
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554 error_with_id_cfn (const char *id, const char *fmt, ...) |
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555 { |
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556 va_list args; |
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557 va_start (args, fmt); |
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558 verror_with_id_cfn (id, fmt, args); |
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559 va_end (args); |
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560 } |
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561 |
| 5567 | 562 static int |
| 563 check_state (const std::string& state) | |
| 564 { | |
| 565 // -1: not found | |
| 566 // 0: found, "off" | |
| 567 // 1: found, "on" | |
| 568 // 2: found, "error" | |
| 569 | |
| 570 if (state == "off") | |
| 571 return 0; | |
| 572 else if (state == "on") | |
| 573 return 1; | |
| 574 else if (state == "error") | |
| 575 return 2; | |
| 576 else | |
| 577 return -1; | |
| 578 } | |
| 579 | |
| 580 // For given warning ID, return 0 if warnings are disabled, 1 if | |
| 581 // enabled, and 2 if this ID should be an error instead of a warning. | |
| 582 | |
| 5781 | 583 int |
| 5567 | 584 warning_enabled (const std::string& id) |
| 1 | 585 { |
| 5567 | 586 int retval = 0; |
| 587 | |
| 588 int all_state = -1; | |
| 589 int id_state = -1; | |
| 590 | |
| 591 octave_idx_type nel = warning_options.numel (); | |
| 592 | |
| 593 if (nel > 0) | |
| 594 { | |
| 595 Cell identifier = warning_options.contents ("identifier"); | |
| 596 Cell state = warning_options.contents ("state"); | |
| 597 | |
| 598 bool all_found = false; | |
| 599 bool id_found = false; | |
| 600 | |
| 601 for (octave_idx_type i = 0; i < nel; i++) | |
| 602 { | |
| 603 octave_value ov = identifier(i); | |
| 604 std::string ovs = ov.string_value (); | |
| 605 | |
| 606 if (! all_found && ovs == "all") | |
| 607 { | |
| 608 all_state = check_state (state(i).string_value ()); | |
| 609 | |
| 610 if (all_state >= 0) | |
| 611 all_found = true; | |
| 612 } | |
| 613 | |
| 614 if (! id_found && ovs == id) | |
| 615 { | |
| 616 id_state = check_state (state(i).string_value ()); | |
| 617 | |
| 618 if (id_state >= 0) | |
| 619 id_found = true; | |
| 620 } | |
| 621 | |
| 622 if (all_found && id_found) | |
| 623 break; | |
| 624 } | |
| 625 } | |
| 626 | |
| 627 if (all_state == -1) | |
| 628 panic_impossible (); | |
| 629 | |
| 630 if (all_state == 0) | |
| 631 { | |
| 632 if (id_state >= 0) | |
| 633 retval = id_state; | |
| 634 } | |
| 635 else if (all_state == 1) | |
| 636 { | |
| 637 if (id_state == 0 || id_state == 2) | |
| 638 retval = id_state; | |
| 639 else | |
| 640 retval = all_state; | |
| 641 } | |
| 642 else if (all_state == 2) | |
| 7206 | 643 { |
| 644 if (id_state == 0) | |
| 645 retval= id_state; | |
| 646 else | |
| 647 retval = all_state; | |
| 648 } | |
| 5567 | 649 |
| 650 return retval; | |
| 651 } | |
| 652 | |
| 653 static void | |
| 654 warning_1 (const char *id, const char *fmt, va_list args) | |
| 655 { | |
| 656 int warn_opt = warning_enabled (id); | |
| 657 | |
| 658 if (warn_opt == 2) | |
| 659 { | |
| 660 // Handle this warning as an error. | |
| 661 | |
| 5998 | 662 error_2 (id, fmt, args); |
| 5567 | 663 } |
| 664 else if (warn_opt == 1) | |
| 3934 | 665 { |
| 8973 | 666 vwarning ("warning", id, fmt, args); |
| 667 | |
| 668 if (! symbol_table::at_top_level () | |
| 5567 | 669 && Vbacktrace_on_warning |
| 4452 | 670 && ! warning_state |
| 671 && ! discard_warning_messages) | |
| 8973 | 672 pr_where ("warning"); |
| 3707 | 673 |
| 3935 | 674 warning_state = 1; |
| 675 | |
| 3934 | 676 if ((interactive || forced_interactive) |
| 5743 | 677 && Vdebug_on_warning |
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678 && octave_call_stack::caller_user_code ()) |
| 3934 | 679 { |
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680 unwind_protect::protect_var (Vdebug_on_warning); |
| 3934 | 681 Vdebug_on_warning = false; |
| 3707 | 682 |
| 3934 | 683 do_keyboard (octave_value_list ()); |
| 3707 | 684 |
| 3934 | 685 unwind_protect::run (); |
| 686 } | |
| 3707 | 687 } |
| 1 | 688 } |
| 689 | |
| 690 void | |
| 6338 | 691 vwarning (const char *fmt, va_list args) |
| 692 { | |
| 693 warning_1 ("", fmt, args); | |
| 694 } | |
| 695 | |
| 696 void | |
| 5567 | 697 warning (const char *fmt, ...) |
| 698 { | |
| 699 va_list args; | |
| 700 va_start (args, fmt); | |
| 6338 | 701 vwarning (fmt, args); |
| 5567 | 702 va_end (args); |
| 703 } | |
| 704 | |
| 705 void | |
| 6338 | 706 vwarning_with_id (const char *id, const char *fmt, va_list args) |
| 707 { | |
| 708 warning_1 (id, fmt, args); | |
| 709 } | |
| 710 | |
| 711 void | |
| 5567 | 712 warning_with_id (const char *id, const char *fmt, ...) |
| 713 { | |
| 714 va_list args; | |
| 715 va_start (args, fmt); | |
| 6338 | 716 vwarning_with_id (id, fmt, args); |
| 5567 | 717 va_end (args); |
| 718 } | |
| 719 | |
| 720 void | |
| 6338 | 721 vparse_error (const char *fmt, va_list args) |
| 722 { | |
| 723 error_1 (std::cerr, 0, "", fmt, args); | |
| 724 } | |
| 725 | |
| 726 void | |
| 1005 | 727 parse_error (const char *fmt, ...) |
| 728 { | |
| 729 va_list args; | |
| 730 va_start (args, fmt); | |
| 6338 | 731 vparse_error (fmt, args); |
| 5567 | 732 va_end (args); |
| 733 } | |
| 734 | |
| 735 void | |
| 6338 | 736 vparse_error_with_id (const char *id, const char *fmt, va_list args) |
| 737 { | |
| 738 error_1 (std::cerr, 0, id, fmt, args); | |
| 739 } | |
| 740 | |
| 741 void | |
| 5567 | 742 parse_error_with_id (const char *id, const char *fmt, ...) |
| 743 { | |
| 744 va_list args; | |
| 745 va_start (args, fmt); | |
| 6338 | 746 vparse_error_with_id (id, fmt, args); |
| 1 | 747 va_end (args); |
| 748 } | |
| 749 | |
| 189 | 750 void |
| 6361 | 751 rethrow_error (const char *id, const char *fmt, ...) |
| 752 { | |
| 753 va_list args; | |
| 754 va_start (args, fmt); | |
| 6640 | 755 error_1 (std::cerr, 0, id, fmt, args); |
| 6361 | 756 va_end (args); |
| 757 } | |
| 758 | |
| 759 void | |
| 1 | 760 panic (const char *fmt, ...) |
| 761 { | |
| 762 va_list args; | |
| 763 va_start (args, fmt); | |
| 4699 | 764 buffer_error_messages = 0; |
| 3815 | 765 discard_error_messages = false; |
| 5567 | 766 verror (false, std::cerr, "panic", "", fmt, args); |
| 1 | 767 va_end (args); |
| 768 abort (); | |
| 769 } | |
| 770 | |
| 4732 | 771 static void |
| 772 defun_usage_message_1 (const char *fmt, ...) | |
| 773 { | |
| 774 va_list args; | |
| 775 va_start (args, fmt); | |
| 5567 | 776 error_1 (octave_stdout, 0, "", fmt, args); |
| 4732 | 777 va_end (args); |
| 778 } | |
| 779 | |
| 780 void | |
| 781 defun_usage_message (const std::string& msg) | |
| 782 { | |
| 783 defun_usage_message_1 ("%s", msg.c_str ()); | |
| 784 } | |
| 785 | |
| 5567 | 786 typedef void (*error_fun)(const char *, const char *, ...); |
| 1489 | 787 |
| 2086 | 788 extern octave_value_list Fsprintf (const octave_value_list&, int); |
| 1489 | 789 |
| 3934 | 790 static std::string |
| 5567 | 791 handle_message (error_fun f, const char *id, const char *msg, |
| 792 const octave_value_list& args) | |
| 528 | 793 { |
| 3934 | 794 std::string retval; |
| 528 | 795 |
| 3523 | 796 std::string tstr; |
| 1728 | 797 |
| 528 | 798 int nargin = args.length (); |
| 799 | |
| 2745 | 800 if (nargin > 0) |
| 528 | 801 { |
| 3066 | 802 octave_value arg; |
| 803 | |
| 804 if (nargin > 1) | |
| 805 { | |
| 806 octave_value_list tmp = Fsprintf (args, 1); | |
| 807 arg = tmp(0); | |
| 808 } | |
| 809 else | |
| 810 arg = args(0); | |
| 2745 | 811 |
| 812 if (arg.is_defined ()) | |
| 528 | 813 { |
| 2745 | 814 if (arg.is_string ()) |
| 815 { | |
| 816 tstr = arg.string_value (); | |
| 817 msg = tstr.c_str (); | |
| 818 | |
| 819 if (! msg) | |
| 820 return retval; | |
| 821 } | |
| 822 else if (arg.is_empty ()) | |
| 528 | 823 return retval; |
| 824 } | |
| 825 } | |
| 826 | |
| 1489 | 827 // Ugh. |
| 828 | |
|
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829 size_t len = strlen (msg); |
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830 |
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831 if (len > 0) |
| 1489 | 832 { |
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833 if (msg[len - 1] == '\n') |
| 1489 | 834 { |
|
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835 if (len > 1) |
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836 { |
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837 char *tmp_msg = strsave (msg); |
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838 tmp_msg[len - 1] = '\0'; |
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839 f (id, "%s\n", tmp_msg); |
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840 retval = tmp_msg; |
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841 delete [] tmp_msg; |
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842 } |
| 1489 | 843 } |
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844 else |
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845 { |
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846 f (id, "%s", msg); |
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847 retval = msg; |
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848 } |
| 3934 | 849 } |
| 528 | 850 |
| 851 return retval; | |
| 852 } | |
| 853 | |
| 6361 | 854 DEFUN (rethrow, args, , |
| 855 "-*- texinfo -*-\n\ | |
| 856 @deftypefn {Built-in Function} {} rethrow (@var{err})\n\ | |
|
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857 Reissues a previous error as defined by @var{err}. @var{err} is a structure\n\ |
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858 that must contain at least the 'message' and 'identifier' fields. @var{err}\n\ |
| 6361 | 859 can also contain a field 'stack' that gives information on the assumed\n\ |
|
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860 location of the error. Typically @var{err} is returned from\n\ |
| 6361 | 861 @code{lasterror}.\n\ |
| 862 @seealso{lasterror, lasterr, error}\n\ | |
| 863 @end deftypefn") | |
| 864 { | |
| 865 octave_value retval; | |
| 866 int nargin = args.length(); | |
| 867 | |
| 868 if (nargin != 1) | |
| 6959 | 869 print_usage (); |
| 6361 | 870 else |
| 871 { | |
| 6483 | 872 Octave_map err = args(0).map_value (); |
| 6361 | 873 |
| 6483 | 874 if (! error_state) |
| 6361 | 875 { |
| 6483 | 876 if (err.contains ("message") && err.contains ("identifier")) |
| 6361 | 877 { |
| 6483 | 878 std::string msg = err.contents("message")(0).string_value (); |
| 879 std::string id = err.contents("identifier")(0).string_value (); | |
| 6361 | 880 int len = msg.length(); |
|
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881 |
| 6361 | 882 std::string file; |
| 883 std::string nm; | |
| 884 int l = -1; | |
| 885 int c = -1; | |
| 886 | |
|
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887 Octave_map err_stack = initialize_last_error_stack (); |
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888 |
| 6483 | 889 if (err.contains ("stack")) |
| 6361 | 890 { |
|
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891 err_stack = err.contents("stack")(0).map_value (); |
| 6483 | 892 |
| 6640 | 893 if (err_stack.numel () > 0) |
| 894 { | |
| 895 if (err_stack.contains ("file")) | |
| 896 file = err_stack.contents("file")(0).string_value (); | |
| 6483 | 897 |
| 6640 | 898 if (err_stack.contains ("name")) |
| 899 nm = err_stack.contents("name")(0).string_value (); | |
| 6483 | 900 |
| 6640 | 901 if (err_stack.contains ("line")) |
| 902 l = err_stack.contents("line")(0).nint_value (); | |
| 903 | |
| 904 if (err_stack.contains ("column")) | |
| 905 c = err_stack.contents("column")(0).nint_value (); | |
| 906 } | |
| 6361 | 907 } |
| 908 | |
| 909 // Ugh. | |
| 6483 | 910 char *tmp_msg = strsave (msg.c_str ()); |
| 6361 | 911 if (tmp_msg[len-1] == '\n') |
| 912 { | |
| 913 if (len > 1) | |
| 914 { | |
| 915 tmp_msg[len - 1] = '\0'; | |
| 6483 | 916 rethrow_error (id.c_str (), "%s\n", tmp_msg); |
| 6361 | 917 } |
| 918 } | |
| 919 else | |
| 6483 | 920 rethrow_error (id.c_str (), "%s", tmp_msg); |
| 6361 | 921 delete [] tmp_msg; |
| 922 | |
|
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923 // FIXME -- is this the right thing to do for |
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924 // Vlast_error_stack? Should it be saved and restored |
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925 // with unwind_protect? |
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926 |
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927 Vlast_error_stack = err_stack; |
| 6361 | 928 |
| 6483 | 929 if (err.contains ("stack")) |
| 6361 | 930 { |
| 931 if (file.empty ()) | |
| 932 { | |
| 933 if (nm.empty ()) | |
| 934 { | |
| 935 if (l > 0) | |
| 6483 | 936 { |
| 937 if (c > 0) | |
| 938 pr_where_1 ("error: near line %d, column %d", | |
| 939 l, c); | |
| 940 else | |
| 941 pr_where_1 ("error: near line %d", l); | |
| 942 } | |
| 6361 | 943 } |
| 944 else | |
| 945 { | |
| 946 if (l > 0) | |
| 6483 | 947 { |
| 948 if (c > 0) | |
| 949 pr_where_1 ("error: called from `%s' near line %d, column %d", | |
| 950 nm.c_str (), l, c); | |
| 951 else | |
| 952 pr_where_1 ("error: called from `%d' near line %d", nm.c_str (), l); | |
| 953 } | |
| 6361 | 954 } |
| 955 } | |
| 956 else | |
| 957 { | |
| 958 if (nm.empty ()) | |
| 959 { | |
| 960 if (l > 0) | |
| 6483 | 961 { |
| 962 if (c > 0) | |
| 963 pr_where_1 ("error: in file %s near line %d, column %d", | |
| 964 file.c_str (), l, c); | |
| 965 else | |
| 966 pr_where_1 ("error: in file %s near line %d", file.c_str (), l); | |
| 967 } | |
| 6361 | 968 } |
| 969 else | |
| 970 { | |
| 971 if (l > 0) | |
| 6483 | 972 { |
| 973 if (c > 0) | |
| 974 pr_where_1 ("error: called from `%s' in file %s near line %d, column %d", | |
| 975 nm.c_str (), file.c_str (), l, c); | |
| 976 else | |
| 977 pr_where_1 ("error: called from `%d' in file %s near line %d", nm.c_str (), file.c_str (), l); | |
| 978 } | |
| 6361 | 979 } |
| 980 } | |
| 981 } | |
| 982 } | |
| 983 else | |
| 984 error ("rethrow: structure must contain the fields 'message and 'identifier'"); | |
| 985 } | |
| 986 } | |
| 987 return retval; | |
| 988 } | |
| 989 | |
| 1957 | 990 DEFUN (error, args, , |
| 3373 | 991 "-*- texinfo -*-\n\ |
| 992 @deftypefn {Built-in Function} {} error (@var{template}, @dots{})\n\ | |
| 7252 | 993 @deftypefnx {Built-in Function} {} error (@var{id}, @var{template}, @dots{})\n\ |
| 5781 | 994 Format the optional arguments under the control of the template string\n\ |
| 995 @var{template} using the same rules as the @code{printf} family of\n\ | |
| 996 functions (@pxref{Formatted Output}) and print the resulting message\n\ | |
| 997 on the @code{stderr} stream. The message is prefixed by the character\n\ | |
| 998 string @samp{error: }.\n\ | |
| 3373 | 999 \n\ |
| 1000 Calling @code{error} also sets Octave's internal error state such that\n\ | |
| 1001 control will return to the top level without evaluating any more\n\ | |
| 1002 commands. This is useful for aborting from functions or scripts.\n\ | |
| 897 | 1003 \n\ |
| 3373 | 1004 If the error message does not end with a new line character, Octave will\n\ |
| 1005 print a traceback of all the function calls leading to the error. For\n\ | |
| 1006 example, given the following function definitions:\n\ | |
| 1007 \n\ | |
| 1008 @example\n\ | |
| 1009 @group\n\ | |
| 6671 | 1010 function f () g (); end\n\ |
| 1011 function g () h (); end\n\ | |
| 3373 | 1012 function h () nargin == 1 || error (\"nargin != 1\"); end\n\ |
| 1013 @end group\n\ | |
| 1014 @end example\n\ | |
| 1489 | 1015 \n\ |
| 3373 | 1016 @noindent\n\ |
| 1017 calling the function @code{f} will result in a list of messages that\n\ | |
| 1018 can help you to quickly locate the exact location of the error:\n\ | |
| 1489 | 1019 \n\ |
|
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1020 @example\n\ |
| 3373 | 1021 @group\n\ |
| 1022 f ()\n\ | |
| 1023 error: nargin != 1\n\ | |
|
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1024 error: called from:\n\ |
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1025 error: error at line -1, column -1\n\ |
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1026 error: h at line 1, column 27\n\ |
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1027 error: g at line 1, column 15\n\ |
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1028 error: f at line 1, column 15\n\ |
| 3373 | 1029 @end group\n\ |
|
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1030 @end example\n\ |
| 3373 | 1031 \n\ |
| 1032 If the error message ends in a new line character, Octave will print the\n\ | |
| 1033 message but will not display any traceback messages as it returns\n\ | |
| 1034 control to the top level. For example, modifying the error message\n\ | |
| 1035 in the previous example to end in a new line causes Octave to only print\n\ | |
| 1036 a single message:\n\ | |
| 1037 \n\ | |
| 1038 @example\n\ | |
| 1039 @group\n\ | |
| 1040 function h () nargin == 1 || error (\"nargin != 1\\n\"); end\n\ | |
| 1041 f ()\n\ | |
| 1042 error: nargin != 1\n\ | |
| 1043 @end group\n\ | |
| 1044 @end example\n\ | |
| 1045 @end deftypefn") | |
| 897 | 1046 { |
| 7252 | 1047 octave_value retval; |
| 1048 | |
| 1049 int nargin = args.length (); | |
| 1050 | |
| 1051 octave_value_list nargs = args; | |
| 1052 | |
| 1053 std::string id; | |
| 1054 | |
|
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1055 if (nargin == 0) |
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1056 print_usage (); |
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1057 else |
| 7252 | 1058 { |
|
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1059 if (nargin > 1) |
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1060 { |
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1061 std::string arg1 = args(0).string_value (); |
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1062 |
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1063 if (! error_state) |
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1064 { |
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1065 if (arg1.find ('%') == std::string::npos) |
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1066 { |
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1067 id = arg1; |
| 5567 | 1068 |
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1069 nargs.resize (nargin-1); |
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1070 |
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1071 for (int i = 1; i < nargin; i++) |
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1072 nargs(i-1) = args(i); |
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1073 } |
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1074 } |
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1075 else |
|
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1076 return retval; |
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1077 } |
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1078 else if (nargin == 1 && args(0).is_map ()) |
| 7252 | 1079 { |
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1080 octave_value_list tmp; |
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1081 |
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1082 Octave_map m = args(0).map_value (); |
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1083 |
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1084 if (m.numel () == 1) |
| 7252 | 1085 { |
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1086 if (m.contains ("message")) |
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1087 { |
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1088 Cell c = m.contents ("message"); |
| 7252 | 1089 |
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1090 if (! c.is_empty () && c(0).is_string ()) |
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1091 nargs(0) = c(0).string_value (); |
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1092 } |
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1093 |
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1094 if (m.contains ("identifier")) |
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1095 { |
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1096 Cell c = m.contents ("identifier"); |
| 7252 | 1097 |
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1098 if (! c.is_empty () && c(0).is_string ()) |
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1099 id = c(0).string_value (); |
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1100 } |
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1101 |
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1102 // FIXME -- also need to handle "stack" field in error |
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1103 // structure, but that will require some more significant |
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1104 // surgery on handle_message, error_with_id, etc. |
| 7252 | 1105 } |
| 1106 } | |
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1107 |
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1108 handle_message (error_with_id, id.c_str (), "unspecified error", nargs); |
| 7252 | 1109 } |
| 1110 | |
| 3934 | 1111 return retval; |
| 1489 | 1112 } |
| 897 | 1113 |
|
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1114 DEFUN (warning, args, nargout, |
| 3373 | 1115 "-*- texinfo -*-\n\ |
| 5781 | 1116 @deftypefn {Built-in Function} {} warning (@var{template}, @dots{})\n\ |
| 7252 | 1117 @deftypefnx {Built-in Function} {} warning (@var{id}, @var{template}, @dots{})\n\ |
| 5781 | 1118 Format the optional arguments under the control of the template string\n\ |
| 1119 @var{template} using the same rules as the @code{printf} family of\n\ | |
| 1120 functions (@pxref{Formatted Output}) and print the resulting message\n\ | |
| 1121 on the @code{stderr} stream. The message is prefixed by the character\n\ | |
| 1122 string @samp{warning: }.\n\ | |
| 1123 You should use this function when you want to notify the user\n\ | |
| 3600 | 1124 of an unusual condition, but only when it makes sense for your program\n\ |
| 1125 to go on.\n\ | |
| 5781 | 1126 \n\ |
| 1127 The optional message identifier allows users to enable or disable\n\ | |
| 1128 warnings tagged by @var{id}. The special identifier @samp{\"all\"} may\n\ | |
| 1129 be used to set the state of all warnings.\n\ | |
| 1130 \n\ | |
| 1131 @deftypefnx {Built-in Function} {} warning (\"on\", @var{id})\n\ | |
| 1132 @deftypefnx {Built-in Function} {} warning (\"off\", @var{id})\n\ | |
| 1133 @deftypefnx {Built-in Function} {} warning (\"error\", @var{id})\n\ | |
| 1134 @deftypefnx {Built-in Function} {} warning (\"query\", @var{id})\n\ | |
| 6653 | 1135 Set or query the state of a particular warning using the identifier\n\ |
| 5781 | 1136 @var{id}. If the identifier is omitted, a value of @samp{\"all\"} is\n\ |
| 1137 assumed. If you set the state of a warning to @samp{\"error\"}, the\n\ | |
| 1138 warning named by @var{id} is handled as if it were an error instead.\n\ | |
| 5783 | 1139 @seealso{warning_ids}\n\ |
| 3373 | 1140 @end deftypefn") |
| 1489 | 1141 { |
| 5567 | 1142 octave_value retval; |
| 3934 | 1143 |
| 5567 | 1144 int nargin = args.length (); |
| 1145 int argc = nargin + 1; | |
| 3934 | 1146 |
| 3935 | 1147 bool done = false; |
| 3934 | 1148 |
| 5567 | 1149 if (argc > 1 && args.all_strings_p ()) |
| 3935 | 1150 { |
| 1151 string_vector argv = args.make_argv ("warning"); | |
| 1152 | |
| 1153 if (! error_state) | |
| 3934 | 1154 { |
| 5567 | 1155 std::string arg1 = argv(1); |
| 1156 std::string arg2 = "all"; | |
| 1157 | |
| 1158 if (argc == 3) | |
| 1159 arg2 = argv(2); | |
| 1160 | |
| 1161 if (arg1 == "on" || arg1 == "off" || arg1 == "error") | |
| 3934 | 1162 { |
| 5567 | 1163 Octave_map old_warning_options = warning_options; |
| 1164 | |
| 1165 if (arg2 == "all") | |
| 1166 { | |
| 1167 Octave_map tmp; | |
| 3934 | 1168 |
| 7202 | 1169 Cell id (1, 1); |
| 1170 Cell st (1, 1); | |
| 1171 | |
| 1172 id(0) = arg2; | |
| 1173 st(0) = arg1; | |
| 1174 | |
| 1175 // Since internal Octave functions are not | |
| 1176 // compatible, turning all warnings into errors | |
| 1177 // should leave the state of | |
| 1178 // Octave:matlab-incompatible alone. | |
| 1179 | |
| 1180 if (arg1 == "error" | |
| 1181 && warning_options.contains ("identifier")) | |
| 1182 { | |
| 7206 | 1183 octave_idx_type n = 1; |
| 1184 | |
| 7202 | 1185 Cell tid = warning_options.contents ("identifier"); |
| 1186 Cell tst = warning_options.contents ("state"); | |
| 1187 | |
| 1188 for (octave_idx_type i = 0; i < tid.numel (); i++) | |
| 1189 { | |
| 1190 octave_value vid = tid(i); | |
| 1191 | |
| 7206 | 1192 if (vid.is_string ()) |
| 7202 | 1193 { |
| 7206 | 1194 std::string key = vid.string_value (); |
| 7202 | 1195 |
| 7206 | 1196 if (key == "Octave:matlab-incompatible" |
| 1197 || key == "Octave:single-quote-string") | |
| 1198 { | |
| 1199 id.resize (dim_vector (1, n+1)); | |
| 1200 st.resize (dim_vector (1, n+1)); | |
| 7202 | 1201 |
| 7206 | 1202 id(n) = tid(i); |
| 1203 st(n) = tst(i); | |
| 1204 | |
| 1205 n++; | |
| 1206 } | |
| 7202 | 1207 } |
| 1208 } | |
| 1209 } | |
| 1210 | |
| 1211 tmp.assign ("identifier", id); | |
| 1212 tmp.assign ("state", st); | |
| 5567 | 1213 |
| 1214 warning_options = tmp; | |
| 1215 | |
| 3935 | 1216 done = true; |
| 1217 } | |
| 5567 | 1218 else if (arg2 == "backtrace") |
| 1219 { | |
| 1220 if (arg1 != "error") | |
| 1221 { | |
| 1222 Vbacktrace_on_warning = (arg1 == "on"); | |
| 1223 done = true; | |
| 1224 } | |
| 1225 } | |
| 1226 else if (arg2 == "debug") | |
| 1227 { | |
| 1228 if (arg1 != "error") | |
| 1229 { | |
| 5794 | 1230 Vdebug_on_warning = (arg1 == "on"); |
| 5567 | 1231 done = true; |
| 1232 } | |
| 1233 } | |
| 1234 else if (arg2 == "verbose") | |
| 1235 { | |
| 1236 if (arg1 != "error") | |
| 1237 { | |
| 1238 Vverbose_warning = (arg1 == "on"); | |
| 1239 done = true; | |
| 1240 } | |
| 1241 } | |
| 5582 | 1242 else if (arg2 == "quiet") |
| 1243 { | |
| 1244 if (arg1 != "error") | |
| 1245 { | |
| 1246 Vquiet_warning = (arg1 == "on"); | |
| 1247 done = true; | |
| 1248 } | |
| 1249 } | |
| 5567 | 1250 else |
| 3935 | 1251 { |
| 5567 | 1252 if (arg2 == "last") |
| 1253 arg2 = Vlast_warning_id; | |
| 1254 | |
| 1255 if (arg2 == "all") | |
| 5794 | 1256 initialize_warning_options (arg1); |
| 5567 | 1257 else |
| 1258 { | |
| 1259 Cell ident = warning_options.contents ("identifier"); | |
| 1260 Cell state = warning_options.contents ("state"); | |
| 1261 | |
| 1262 octave_idx_type nel = ident.numel (); | |
| 1263 | |
| 1264 bool found = false; | |
| 1265 | |
| 1266 for (octave_idx_type i = 0; i < nel; i++) | |
| 1267 { | |
| 1268 if (ident(i).string_value () == arg2) | |
| 1269 { | |
| 5775 | 1270 // FIXME -- if state for "all" is |
| 5567 | 1271 // same as arg1, we can simply remove the |
| 1272 // item from the list. | |
| 1273 | |
| 1274 state(i) = arg1; | |
| 1275 warning_options.assign ("state", state); | |
| 1276 found = true; | |
| 1277 break; | |
| 1278 } | |
| 1279 } | |
| 1280 | |
| 1281 if (! found) | |
| 1282 { | |
| 5775 | 1283 // FIXME -- if state for "all" is |
| 5567 | 1284 // same as arg1, we don't need to do anything. |
| 1285 | |
| 1286 ident.resize (dim_vector (1, nel+1)); | |
| 1287 state.resize (dim_vector (1, nel+1)); | |
| 1288 | |
| 1289 ident(nel) = arg2; | |
| 1290 state(nel) = arg1; | |
| 1291 | |
| 1292 warning_options.clear (); | |
| 1293 | |
| 1294 warning_options.assign ("identifier", ident); | |
| 1295 warning_options.assign ("state", state); | |
| 1296 } | |
| 1297 } | |
| 1298 | |
| 3935 | 1299 done = true; |
| 1300 } | |
| 5567 | 1301 |
| 1302 if (done && nargout > 0) | |
| 6427 | 1303 retval = old_warning_options; |
| 5567 | 1304 } |
| 1305 else if (arg1 == "query") | |
| 1306 { | |
| 1307 if (arg2 == "all") | |
| 1308 retval = warning_options; | |
| 1309 else if (arg2 == "backtrace" || arg2 == "debug" | |
| 5582 | 1310 || arg2 == "verbose" || arg2 == "quiet") |
| 5567 | 1311 { |
| 1312 Octave_map tmp; | |
| 1313 tmp.assign ("identifier", arg2); | |
| 1314 if (arg2 == "backtrace") | |
| 1315 tmp.assign ("state", Vbacktrace_on_warning ? "on" : "off"); | |
| 1316 else if (arg2 == "debug") | |
| 1317 tmp.assign ("state", Vdebug_on_warning ? "on" : "off"); | |
| 5582 | 1318 else if (arg2 == "verbose") |
| 1319 tmp.assign ("state", Vverbose_warning ? "on" : "off"); | |
| 5567 | 1320 else |
| 5582 | 1321 tmp.assign ("state", Vquiet_warning ? "on" : "off"); |
| 1322 | |
| 1323 retval = tmp; | |
| 5567 | 1324 } |
| 1325 else | |
| 3935 | 1326 { |
| 5567 | 1327 if (arg2 == "last") |
| 1328 arg2 = Vlast_warning_id; | |
| 1329 | |
| 1330 Cell ident = warning_options.contents ("identifier"); | |
| 1331 Cell state = warning_options.contents ("state"); | |
| 1332 | |
| 1333 octave_idx_type nel = ident.numel (); | |
| 1334 | |
| 1335 bool found = false; | |
| 1336 | |
| 1337 std::string val; | |
| 1338 | |
| 1339 for (octave_idx_type i = 0; i < nel; i++) | |
| 1340 { | |
| 1341 if (ident(i).string_value () == arg2) | |
| 1342 { | |
| 1343 val = state(i).string_value (); | |
| 1344 found = true; | |
| 1345 break; | |
| 1346 } | |
| 1347 } | |
| 1348 | |
| 5781 | 1349 if (! found) |
| 1350 { | |
| 1351 for (octave_idx_type i = 0; i < nel; i++) | |
| 1352 { | |
| 1353 if (ident(i).string_value () == "all") | |
| 1354 { | |
| 1355 val = state(i).string_value (); | |
| 1356 found = true; | |
| 1357 break; | |
| 1358 } | |
| 1359 } | |
| 1360 } | |
| 1361 | |
| 5567 | 1362 if (found) |
| 1363 { | |
| 1364 Octave_map tmp; | |
| 1365 | |
| 1366 tmp.assign ("identifier", arg2); | |
| 1367 tmp.assign ("state", val); | |
| 1368 | |
| 1369 retval = tmp; | |
| 1370 } | |
| 1371 else | |
| 5781 | 1372 error ("warning: unable to find default warning state!"); |
| 3935 | 1373 } |
| 5567 | 1374 |
| 1375 done = true; | |
| 3935 | 1376 } |
| 3934 | 1377 } |
| 1378 } | |
| 5567 | 1379 else if (argc == 1) |
| 1380 { | |
| 1381 retval = warning_options; | |
| 3934 | 1382 |
| 5567 | 1383 done = true; |
| 1384 } | |
| 1385 else if (argc == 2) | |
| 1386 { | |
| 1387 octave_value arg = args(0); | |
| 1388 | |
| 1389 Octave_map old_warning_options = warning_options; | |
| 1390 | |
| 1391 if (arg.is_map ()) | |
| 1392 { | |
| 1393 Octave_map m = arg.map_value (); | |
| 1394 | |
| 1395 if (m.contains ("identifier") && m.contains ("state")) | |
| 6427 | 1396 warning_options = m; |
| 5567 | 1397 else |
| 1398 error ("warning: expecting structure with fields `identifier' and `state'"); | |
| 1399 | |
| 1400 done = true; | |
| 1401 | |
| 1402 if (nargout > 0) | |
| 1403 retval = old_warning_options; | |
| 1404 } | |
| 1405 } | |
| 1406 | |
| 1407 if (! (error_state || done)) | |
| 3935 | 1408 { |
| 5567 | 1409 octave_value_list nargs = args; |
| 1410 | |
| 1411 std::string id; | |
| 1412 | |
| 1413 if (nargin > 1) | |
| 1414 { | |
| 1415 std::string arg1 = args(0).string_value (); | |
| 1416 | |
| 1417 if (! error_state) | |
| 1418 { | |
| 8021 | 1419 if (arg1.find ('%') == std::string::npos) |
| 5567 | 1420 { |
| 1421 id = arg1; | |
| 1422 | |
| 1423 nargs.resize (nargin-1); | |
| 1424 | |
| 1425 for (int i = 1; i < nargin; i++) | |
| 1426 nargs(i-1) = args(i); | |
| 1427 } | |
| 1428 } | |
| 1429 else | |
| 1430 return retval; | |
| 1431 } | |
| 1432 | |
| 3935 | 1433 std::string prev_msg = Vlast_warning_message; |
| 1434 | |
| 5567 | 1435 std::string curr_msg = handle_message (warning_with_id, id.c_str (), |
| 1436 "unspecified warning", nargs); | |
| 3935 | 1437 |
| 1438 if (nargout > 0) | |
| 5567 | 1439 retval = prev_msg; |
| 3935 | 1440 } |
| 1441 | |
| 3934 | 1442 return retval; |
| 1443 } | |
| 1444 | |
| 5904 | 1445 void |
| 5794 | 1446 disable_warning (const std::string& id) |
| 1447 { | |
| 1448 octave_value_list args; | |
| 1449 | |
| 1450 args(1) = id; | |
| 1451 args(0) = "off"; | |
| 1452 | |
| 1453 Fwarning (args, 0); | |
| 1454 } | |
| 1455 | |
| 1456 void | |
| 1457 initialize_default_warning_state (void) | |
| 1458 { | |
| 1459 initialize_warning_options ("on"); | |
| 1460 | |
| 1461 // Most people will want to have the following disabled. | |
| 1462 | |
| 1463 disable_warning ("Octave:array-to-scalar"); | |
| 1464 disable_warning ("Octave:array-to-vector"); | |
| 1465 disable_warning ("Octave:empty-list-elements"); | |
| 1466 disable_warning ("Octave:fortran-indexing"); | |
| 1467 disable_warning ("Octave:imag-to-real"); | |
| 1468 disable_warning ("Octave:matlab-incompatible"); | |
| 1469 disable_warning ("Octave:missing-semicolon"); | |
| 1470 disable_warning ("Octave:neg-dim-as-zero"); | |
| 1471 disable_warning ("Octave:resize-on-range-error"); | |
| 1472 disable_warning ("Octave:separator-insert"); | |
| 1473 disable_warning ("Octave:single-quote-string"); | |
| 1474 disable_warning ("Octave:str-to-num"); | |
| 1475 disable_warning ("Octave:string-concat"); | |
| 1476 disable_warning ("Octave:variable-switch-label"); | |
|
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1477 disable_warning ("Octave:int-convert-nan"); |
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1478 disable_warning ("Octave:int-convert-non-int-val"); |
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1479 disable_warning ("Octave:int-convert-overflow"); |
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1480 disable_warning ("Octave:int-math-overflow"); |
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1481 disable_warning ("Octave:complex-cmp-ops"); |
| 5794 | 1482 } |
| 1483 | |
| 6361 | 1484 DEFUN (lasterror, args, , |
| 1485 "-*- texinfo -*-\n\ | |
| 1486 @deftypefn {Built-in Function} {@var{err} =} lasterror (@var{err})\n\ | |
| 1487 @deftypefnx {Built-in Function} {} lasterror ('reset')\n\ | |
|
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1488 Returns or sets the last error message. Called without any arguments\n\ |
| 6361 | 1489 returns a structure containing the last error message, as well as other\n\ |
|
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1490 information related to this error. The elements of this structure are:\n\ |
| 6361 | 1491 \n\ |
| 1492 @table @asis\n\ | |
| 1493 @item 'message'\n\ | |
| 1494 The text of the last error message\n\ | |
| 1495 @item 'identifier'\n\ | |
| 1496 The message identifier of this error message\n\ | |
| 1497 @item 'stack'\n\ | |
|
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1498 A structure containing information on where the message occurred. This might\n\ |
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1499 be an empty structure if this in the case where this information cannot\n\ |
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1500 be obtained. The fields of this structure are:\n\ |
| 6361 | 1501 \n\ |
| 1502 @table @asis\n\ | |
| 1503 @item 'file'\n\ | |
| 1504 The name of the file where the error occurred\n\ | |
| 1505 @item 'name'\n\ | |
| 7001 | 1506 The name of function in which the error occurred\n\ |
| 6361 | 1507 @item 'line'\n\ |
| 7001 | 1508 The line number at which the error occurred\n\ |
| 6361 | 1509 @item 'column'\n\ |
| 1510 An optional field with the column number at which the error occurred\n\ | |
| 1511 @end table\n\ | |
| 1512 @end table\n\ | |
| 1513 \n\ | |
| 1514 The @var{err} structure may also be passed to @code{lasterror} to set the\n\ | |
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1515 information about the last error. The only constraint on @var{err} in that\n\ |
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1516 case is that it is a scalar structure. Any fields of @var{err} that match\n\ |
| 6361 | 1517 the above are set to the value passed in @var{err}, while other fields are\n\ |
| 1518 set to their default values.\n\ | |
| 1519 \n\ | |
| 1520 If @code{lasterror} is called with the argument 'reset', all values take\n\ | |
| 1521 their default values.\n\ | |
| 1522 @end deftypefn") | |
| 1523 { | |
| 1524 octave_value retval; | |
| 1525 int nargin = args.length(); | |
| 1526 | |
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1527 unwind_protect::frame_id_t uwp_frame = unwind_protect::begin_frame (); |
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1528 |
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1529 unwind_protect::protect_var (error_state); |
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1530 error_state = 0; |
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1531 |
| 6361 | 1532 if (nargin < 2) |
| 1533 { | |
| 1534 Octave_map err; | |
| 1535 | |
| 1536 err.assign ("message", Vlast_error_message); | |
| 1537 err.assign ("identifier", Vlast_error_id); | |
| 1538 | |
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1539 err.assign ("stack", octave_value (Vlast_error_stack)); |
| 6361 | 1540 |
| 1541 if (nargin == 1) | |
| 1542 { | |
| 1543 if (args(0).is_string()) | |
| 1544 { | |
| 6483 | 1545 if (args(0).string_value () == "reset") |
| 6361 | 1546 { |
| 1547 Vlast_error_message = std::string(); | |
| 1548 Vlast_error_id = std::string(); | |
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1549 |
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1550 Vlast_error_stack = initialize_last_error_stack (); |
| 6361 | 1551 } |
| 1552 else | |
| 1553 error("lasterror: unrecognized string argument"); | |
| 1554 } | |
| 1555 else if (args(0).is_map ()) | |
| 1556 { | |
| 6483 | 1557 Octave_map new_err = args(0).map_value (); |
| 6361 | 1558 std::string new_error_message; |
| 1559 std::string new_error_id; | |
| 1560 std::string new_error_file; | |
| 1561 std::string new_error_name; | |
| 1562 int new_error_line = -1; | |
| 1563 int new_error_column = -1; | |
| 1564 | |
| 6483 | 1565 if (! error_state && new_err.contains ("message")) |
| 6361 | 1566 { |
| 1567 const std::string tmp = | |
| 6483 | 1568 new_err.contents("message")(0).string_value (); |
| 6361 | 1569 new_error_message = tmp; |
| 1570 } | |
| 1571 | |
| 6483 | 1572 if (! error_state && new_err.contains ("identifier")) |
| 6361 | 1573 { |
| 1574 const std::string tmp = | |
| 6483 | 1575 new_err.contents("identifier")(0).string_value (); |
| 6361 | 1576 new_error_id = tmp; |
| 1577 } | |
| 1578 | |
| 6483 | 1579 if (! error_state && new_err.contains ("stack")) |
| 6361 | 1580 { |
| 1581 Octave_map new_err_stack = | |
| 6483 | 1582 new_err.contents("identifier")(0).map_value (); |
| 6361 | 1583 |
| 6483 | 1584 if (! error_state && new_err_stack.contains ("file")) |
| 6361 | 1585 { |
| 1586 const std::string tmp = | |
| 6483 | 1587 new_err_stack.contents("file")(0).string_value (); |
| 6361 | 1588 new_error_file = tmp; |
| 1589 } | |
| 1590 | |
| 6483 | 1591 if (! error_state && new_err_stack.contains ("name")) |
| 6361 | 1592 { |
| 1593 const std::string tmp = | |
| 6483 | 1594 new_err_stack.contents("name")(0).string_value (); |
| 6361 | 1595 new_error_name = tmp; |
| 1596 } | |
| 1597 | |
| 6483 | 1598 if (! error_state && new_err_stack.contains ("line")) |
| 6361 | 1599 { |
| 1600 const int tmp = | |
| 6483 | 1601 new_err_stack.contents("line")(0).nint_value (); |
| 6361 | 1602 new_error_line = tmp; |
| 1603 } | |
| 1604 | |
| 6483 | 1605 if (! error_state && new_err_stack.contains ("column")) |
| 6361 | 1606 { |
| 1607 const int tmp = | |
| 6483 | 1608 new_err_stack.contents("column")(0).nint_value (); |
| 6361 | 1609 new_error_column = tmp; |
| 1610 } | |
| 1611 } | |
| 1612 | |
| 1613 if (! error_state) | |
| 1614 { | |
| 1615 Vlast_error_message = new_error_message; | |
| 1616 Vlast_error_id = new_error_id; | |
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1617 |
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1618 octave_idx_type curr_frame = -1; |
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1619 |
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1620 Vlast_error_stack |
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1621 = octave_call_stack::backtrace (0, curr_frame); |
| 6361 | 1622 } |
| 1623 } | |
| 1624 else | |
| 1625 error ("lasterror: argument must be a structure or a string"); | |
| 1626 } | |
| 1627 | |
| 6483 | 1628 if (! error_state) |
| 6361 | 1629 retval = err; |
| 1630 } | |
| 1631 else | |
| 1632 print_usage (); | |
| 1633 | |
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1634 unwind_protect::run_frame (uwp_frame); |
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1635 |
| 6361 | 1636 return retval; |
| 1637 } | |
| 1638 | |
| 5567 | 1639 DEFUN (lasterr, args, nargout, |
| 3935 | 1640 "-*- texinfo -*-\n\ |
| 5567 | 1641 @deftypefn {Built-in Function} {[@var{msg}, @var{msgid}] =} lasterr (@var{msg}, @var{msgid})\n\ |
| 3935 | 1642 Without any arguments, return the last error message. With one\n\ |
| 5567 | 1643 argument, set the last error message to @var{msg}. With two arguments,\n\ |
| 1644 also set the last message identifier.\n\ | |
| 3935 | 1645 @end deftypefn") |
| 1646 { | |
| 1647 octave_value_list retval; | |
| 1648 | |
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1649 unwind_protect::frame_id_t uwp_frame = unwind_protect::begin_frame (); |
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1650 |
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1651 unwind_protect::protect_var (error_state); |
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1652 error_state = 0; |
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1653 |
| 3935 | 1654 int argc = args.length () + 1; |
| 1655 | |
| 5567 | 1656 if (argc < 4) |
| 5335 | 1657 { |
| 1658 string_vector argv = args.make_argv ("lasterr"); | |
| 3935 | 1659 |
| 5335 | 1660 if (! error_state) |
| 1661 { | |
| 5567 | 1662 std::string prev_error_id = Vlast_error_id; |
| 1663 std::string prev_error_message = Vlast_error_message; | |
| 1664 | |
| 1665 if (argc > 2) | |
| 1666 Vlast_error_id = argv(2); | |
| 1667 | |
| 1668 if (argc > 1) | |
| 5335 | 1669 Vlast_error_message = argv(1); |
| 5567 | 1670 |
| 1671 if (argc == 1 || nargout > 0) | |
| 1672 { | |
| 1673 retval(1) = prev_error_id; | |
| 1674 retval(0) = prev_error_message; | |
| 1675 } | |
| 5335 | 1676 } |
| 5567 | 1677 else |
| 5582 | 1678 error ("lasterr: expecting arguments to be character strings"); |
| 5335 | 1679 } |
| 3935 | 1680 else |
| 5823 | 1681 print_usage (); |
| 3935 | 1682 |
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1683 unwind_protect::run_frame (uwp_frame); |
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1684 |
| 3935 | 1685 return retval; |
| 1686 } | |
| 1687 | |
| 4699 | 1688 // For backward compatibility. |
| 1689 DEFALIAS (error_text, lasterr); | |
| 1690 DEFALIAS (__error_text__, lasterr); | |
| 1691 | |
| 5567 | 1692 DEFUN (lastwarn, args, nargout, |
| 3934 | 1693 "-*- texinfo -*-\n\ |
| 5567 | 1694 @deftypefn {Built-in Function} {[@var{msg}, @var{msgid}] =} lastwarn (@var{msg}, @var{msgid})\n\ |
| 3935 | 1695 Without any arguments, return the last warning message. With one\n\ |
| 5567 | 1696 argument, set the last warning message to @var{msg}. With two arguments,\n\ |
| 1697 also set the last message identifier.\n\ | |
| 3934 | 1698 @end deftypefn") |
| 1699 { | |
| 1700 octave_value_list retval; | |
| 1701 | |
| 1702 int argc = args.length () + 1; | |
| 1703 | |
| 5567 | 1704 if (argc < 4) |
| 1705 { | |
| 1706 string_vector argv = args.make_argv ("lastwarn"); | |
| 1707 | |
| 1708 if (! error_state) | |
| 1709 { | |
| 1710 std::string prev_warning_id = Vlast_warning_id; | |
| 1711 std::string prev_warning_message = Vlast_warning_message; | |
| 1712 | |
| 1713 if (argc > 2) | |
| 1714 Vlast_warning_id = argv(2); | |
| 3934 | 1715 |
| 5567 | 1716 if (argc > 1) |
| 1717 Vlast_warning_message = argv(1); | |
| 1718 | |
| 1719 if (argc == 1 || nargout > 0) | |
| 1720 { | |
| 5582 | 1721 warning_state = 0; |
| 5567 | 1722 retval(1) = prev_warning_id; |
| 1723 retval(0) = prev_warning_message; | |
| 1724 } | |
| 1725 } | |
| 1726 else | |
| 1727 error ("lastwarn: expecting arguments to be character strings"); | |
| 1728 } | |
| 3934 | 1729 else |
| 5823 | 1730 print_usage (); |
| 3934 | 1731 |
| 1732 return retval; | |
| 897 | 1733 } |
| 1734 | |
| 1957 | 1735 DEFUN (usage, args, , |
| 3373 | 1736 "-*- texinfo -*-\n\ |
| 1737 @deftypefn {Built-in Function} {} usage (@var{msg})\n\ | |
| 1738 Print the message @var{msg}, prefixed by the string @samp{usage: }, and\n\ | |
| 1739 set Octave's internal error state such that control will return to the\n\ | |
| 1740 top level without evaluating any more commands. This is useful for\n\ | |
| 1741 aborting from functions.\n\ | |
| 1742 \n\ | |
| 1743 After @code{usage} is evaluated, Octave will print a traceback of all\n\ | |
| 1744 the function calls leading to the usage message.\n\ | |
| 899 | 1745 \n\ |
| 3373 | 1746 You should use this function for reporting problems errors that result\n\ |
| 1747 from an improper call to a function, such as calling a function with an\n\ | |
| 1748 incorrect number of arguments, or with arguments of the wrong type. For\n\ | |
| 1749 example, most functions distributed with Octave begin with code like\n\ | |
| 1750 this\n\ | |
| 1751 \n\ | |
| 1752 @example\n\ | |
| 1753 @group\n\ | |
| 1754 if (nargin != 2)\n\ | |
| 1755 usage (\"foo (a, b)\");\n\ | |
| 1756 endif\n\ | |
| 1757 @end group\n\ | |
| 1758 @end example\n\ | |
| 1759 \n\ | |
| 1760 @noindent\n\ | |
| 1761 to check for the proper number of arguments.\n\ | |
| 1762 @end deftypefn") | |
| 899 | 1763 { |
| 3934 | 1764 octave_value_list retval; |
| 5567 | 1765 handle_message (usage_with_id, "", "unknown", args); |
| 3934 | 1766 return retval; |
| 899 | 1767 } |
| 1768 | |
| 5794 | 1769 DEFUN (beep_on_error, args, nargout, |
| 1770 "-*- texinfo -*-\n\ | |
| 1771 @deftypefn {Built-in Function} {@var{val} =} beep_on_error ()\n\ | |
| 1772 @deftypefnx {Built-in Function} {@var{old_val} =} beep_on_error (@var{new_val})\n\ | |
| 1773 Query or set the internal variable that controls whether Octave will try\n\ | |
| 1774 to ring the terminal bell before printing an error message.\n\ | |
| 1775 @end deftypefn") | |
| 3707 | 1776 { |
| 5794 | 1777 return SET_INTERNAL_VARIABLE (beep_on_error); |
| 3707 | 1778 } |
| 1779 | |
| 5794 | 1780 DEFUN (debug_on_error, args, nargout, |
| 3373 | 1781 "-*- texinfo -*-\n\ |
| 5794 | 1782 @deftypefn {Built-in Function} {@var{val} =} debug_on_error ()\n\ |
| 1783 @deftypefnx {Built-in Function} {@var{old_val} =} debug_on_error (@var{new_val})\n\ | |
| 1784 Query or set the internal variable that controls whether Octave will try\n\ | |
| 3707 | 1785 to enter the debugger when an error is encountered. This will also\n\ |
| 1786 inhibit printing of the normal traceback message (you will only see\n\ | |
| 5794 | 1787 the top-level error message).\n\ |
| 1788 @end deftypefn") | |
| 1789 { | |
| 1790 return SET_INTERNAL_VARIABLE (debug_on_error); | |
| 1791 } | |
| 3707 | 1792 |
| 5794 | 1793 DEFUN (debug_on_warning, args, nargout, |
| 3707 | 1794 "-*- texinfo -*-\n\ |
| 5794 | 1795 @deftypefn {Built-in Function} {@var{val} =} debug_on_warning ()\n\ |
| 1796 @deftypefnx {Built-in Function} {@var{old_val} =} debug_on_warning (@var{new_val})\n\ | |
| 1797 Query or set the internal variable that controls whether Octave will try\n\ | |
| 1798 to enter the debugger when a warning is encountered.\n\ | |
| 1799 @end deftypefn") | |
| 1800 { | |
| 1801 return SET_INTERNAL_VARIABLE (debug_on_warning); | |
| 2174 | 1802 } |
| 1803 | |
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1804 std::string |
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1805 last_error_message (void) |
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1806 { |
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1807 return Vlast_error_message; |
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1808 } |
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1809 |
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1810 std::string |
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1811 last_error_id (void) |
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1812 { |
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1813 return Vlast_error_id; |
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1814 } |
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1815 |
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1816 std::string |
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1817 last_warning_message (void) |
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1818 { |
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1819 return Vlast_warning_message; |
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1820 } |
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1821 |
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1822 std::string |
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1823 last_warning_id (void) |
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1824 { |
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1825 return Vlast_warning_id; |
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1826 } |
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1827 |
| 1 | 1828 /* |
| 1829 ;;; Local Variables: *** | |
| 1830 ;;; mode: C++ *** | |
| 1831 ;;; End: *** | |
| 1832 */ |